Translocation and insecticidal activity of Bacillus thuringiensis living inside of plants

Rose Gomes Monnerat, Carlos Marcelo Soares, Guy Capdeville, Gareth Jones, Erica Soares Martins, Lilian Praça, Bruno Arrivabene Cordeiro, Shélida Vasconcelos Braz, Roseane Cavalcante dos Santos, Colin Berry

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

The major biological pesticide for the control of insect infestations of crops, Bacillus thuringiensis was found to be present naturally within cotton plants from fields that had never been treated with commercial formulations of this bacterium. The ability of B. thuringiensis to colonize plants as an endophyte was further established by the introduction of a strain marked by production of green fluorescent protein (GFP). After inoculation of this preparation close to the roots of cotton and cabbage seedlings, GFP-marked bacteria could be re-isolated from all parts of the plant, having entered the roots and migrated through the xylem. Leaves taken from the treated plants were able to cause toxicity when fed to the Lepidoptera Spodoptera frugiperda (cotton) and Plutella xylostella (cabbage). These results open up new horizons for understanding the natural ecology and evolution of B. thuringiensis and use of B. thuringiensis in insect control.

Original languageEnglish
Pages (from-to)512-20
Number of pages9
JournalMicrobial biotechnology
Volume2
Issue number4
DOIs
Publication statusPublished - Jul 2009

Bibliographical note

Journal compilation © 2009 Society for Applied Microbiology and Blackwell Publishing Ltd. No claim to original Brazilian government works.

Keywords

  • Animals
  • Bacillus thuringiensis/growth & development
  • Brassica/microbiology
  • Gossypium/microbiology
  • Insecticides/metabolism
  • Lepidoptera/drug effects
  • Plant Leaves/microbiology
  • Plant Roots/microbiology
  • Plants/microbiology
  • Survival Analysis
  • Xylem/microbiology

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